Blind-adjuster.



PATENTED APR. 24, 1906.

I. L. GARSIDB.

BLIND ADJUSTER.

APPLIoATxoN FILED 103.12, 1905.

M ZMZZ/Md BY fwd ATTORNEYS "UNITED STATES PATENT OFFICE.

IRAI) L. GARSIDE, OF PATERSON, NEV JERSEY, ASSIGNOR TO THE GARSIDE MANUFACTURING COMPANY, OF PATERSON, NEW

JERSEY.

BLIND-ADJUSTER.

Specification of Letters Patent.

Patented April 24, 1906.

To @ZZ whom, it muy concern:

Be it known that I, IRAD L. GARsiDE, a citizen of the United States, residing in Paterson, county of Passaic, and State of New Jersey, have invented certain new and useful Improvements in Blind-Adjusters, and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which forni a part of this specification.

My invention relates to blind-adjusters of the type illustrated in my United States Letters Patent No. 7 7 6,317 and comprising two pivotally-connected arms or levers, one of which is connected to the blind and the other to some fixed part, as the window frame or casing. Its object is to so arrange and construct these parts that when the blind is closed it will be automatically locked shut, except the arms are manipulated, thus preventing opening the blind from the outside.

Referring to the accompanying drawings, Figure 1 is a horizontal sectional view of a blind and a window frame or casing, showing the blind-adjuster in plan and Fig. 2 is an inside view of the parts.

In the drawings, a is the blind; t, the outer face of the sill, the same marking the closed position of the blind in the frame c; (l, one of the hinges arranged with its pivot e beyond or outside of the plane of contact of blind and frame; f and g, two folding arms pivoted together at 71., and the one, g, being pivotally connected to the blind by means of a bracket i, and the other, f, being pivot-ally connected to the frame at j. Other parts shown in the drawings are fully described in my Letters Patent above referred to, and since they have no relation to my present invention need not be described herein.

Referring now to Fig. 1, it will be observed that since pivot e is located relatively outside of the plane of the face o of the sill, when the blind is moved outwardly from its closed position, point it, which marks the pivot between bracket t and arm g, tends to move to the left as it moves outwardly.

Vhen the parts are in the position shown in Fig. 1, where the blind is closed and the parts are locking it in position, the articulating portion of the arms being in contact with the blind, point 7c is, moreover, inside of a straight line connecting the centers of points h and y'. This is accomplished by making the bracket t long enough, so that point r will extend to or beyond said line. The result is that if it is attempted to open the blind by moving the same outwardly bracket i acts on arm g to move the saine longitudinally; but the thrust of arm g, tending to effect any movement of arm f around its pivot j, must be from one side or the other of arm f. Hence the blind is locked, This effect is augmented in the specific form shown in the drawings (seen best in Fig. l) by arranging point far enough away from the plane t so that when the blind is closed arms f and g stand obliquely to said plane.

Having thus fully described iny invention, what I claim as new, and desire to secure by Letters Patent, is

The combination of the window-frame, a blind hinged therein and having its axis of pivotal movement beyond the plane of contact of the blind and frame in the closed position of the blind, a bracket on the blind, and folding arms pivotally connected the one to the frame and the other to said bracket, the articulating portion of said arms being closer to the blind than the pivot of the one arm and the frame when the blind is closed and the bracket being of such length that the pivot of the arm thereon is farther from the blind, when closed, than the other arm where the latter crosses said bracket, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of April, 1905.

IRAD L. GARSIDE.

lVitnesses:

JOHN W. STEWARD, ALFRED GARTNER. 

